So I recently got Joystick Mapper to use my DS4 with Left 4 Dead 2, and everything works great.... EXCEPT the mouse movement. Mouse movement works, but it's really jumpy. Rather than being smooth, 1 frame I'm looking at a specific spot, and then 2 frames later it suddenly jumps to looking at where I want to look at -- with no extrapolation in between.
I've enabled smooth mouse movement in game, but it does not seem to help. Additionally, the view moves at the same rate no matter what distance I push the joystick. Does anyone know how to solve this problem?
TL;DR Mouse movement in game using mapped DS4 is choppy and hard to use.